विज्ञान-जगत : देवेन्द्र कुमार द्वारा हिंदी पीडीऍफ़ पुस्तक – विज्ञान | Vigyan Jagat : by Devendra Kumar Hindi PDF Book – Science (Vigyan)
Pustak Ka Vivaran : Telivijan par rangin chitr kaise dikhai dete hai ? dharti se hajar meel dur antariksh mein ghumta hua pletpharm kaise ban sakega ? roket-yanon dwara chandralok kaise pahuncha ja sakta hai ? dhup baitari kise kahte hai ? transistar kaise kaam karta hai ? yadi is tarah ke saval kabhi aapke man mein aate hai to aap mein vaigyanik ki si jigyasa maujud hai…………
Description about eBook : How do the colorful pictures on television appear? How can a planet roaming in space thousands of miles away from the Earth? How can the rocket be reached by rockets? What is the smoke battery? How does ‘transistor’ work? If such questions ever come to your mind, then there is a scientific question in you…………
